Finding the Fourth Proportional to 3,672.45, 5,067.88 and 2,100.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.45 : 5,067.88 = 2,100.45 : x
2. Step 2: Convert to fraction form
   3,672.45/5,067.88 = 2,100.45/x
3. Step 3: Cross multiply
   3,672.45x = 5,067.88 × 2,100.45
4. Step 4: Simplify right side
   3,672.45x = 10,644,828.55
5. Step 5: Solve for x
   x = 10,644,828.55/3,672.45
6. Step 6: Final answer
   x = 2,898.56